Common Core State Standards Initiative
The multi-state initiative released the CCSS on June 2, 2010. The initiative site includes information about the development and research behind the standards, appendices, the states that have adopted the CCSS, and frequently asked questions.

Grade Level CurriculumThe grade-level curriculum documents are organized by individual grade levels and include information about the CCSS. There are also archived webinars for the kindergarten through grade six documents, which highlight the curriculum across the featured grade level with special focus on the CCSS.

Achieve the Core
Free, high-quality resources compiled by Student Achievement Partners, writers of the CCSS, for educators implementing the CCSS, including professional learning modules, handouts, presentations, sample lessons, lesson videos, and much more.

Basal Alignment Project
The Basal Alignment Project provides a collection of replacement lessons to the most commonly used basal readers. Use these high-quality, CCSS-aligned questions and materials with your existing textbook.

Anthology Alignment Project
The Anthology Alignment Project
provides free, teacher-developed CCSS-aligned lessons for anthology readers in grades 6–10. The lessons can be used immediately in the classroom and for professional development.